Evaluation Board Hardware; Power Supplies And Default Link Options - Analog Devices EVAL-AD5761RSDZ User Manual

EVAL-AD5761RSDZ

EVALUATION BOARD HARDWARE

POWER SUPPLIES AND DEFAULT LINK OPTIONS

The EVAL-AD5761RSDZ evaluation board can be powered
using the on-board ADP5070
sources available are an external single supply via the PVIN_
3V–15V connector, the USB_POWER connector, and a supply
sourced from the SDP-B controller board (LK2 inserted).
Alternatively, the J4 connector can provide power to the board,
instead of the ADP5070, and it is intended for use with well-
regulated bench supplies. See Figure 2 for a functional block
diagram of the evaluation board.
Table 1. Quick Start Jumper Configuration for On-Board ADP5070, Bench Supply, and USB Port
Link No. ADP5070
LK7 Removed
LK8 Removed
LK14 Removed
LK_AVDD A
LK_AVSS A
LK_DVCC A
LK_REF B
LK_VOUT+ B
LK_VOUT- B
PVIN_3V-15V
PVIN
PGND
USB_POWER
LK2
SDP-B BOARD
CONNECTION
User Guide
from a single voltage. The voltage
with LDOs ADP5070
Inserted
Inserted
Removed
B
B
B
B
B
B
LK7 ON: +21.1V
LK7 OFF: +23.2V
LK7
LK8 ON: –11V
ADP5070
LK8 OFF: –13V
LK8
Figure 2. Powering the EVAL-AD5761RSDZ Evaluation Board
With any of the possible options, set the link options on the
evaluation board for the required operating setup first before
supplying the board.
Each supply is decoupled to the relevant ground plane with
10 µF and 0.1 µF capacitors. Each device supply pin is again
decoupled with a 10 µF and 0.1 µF capacitor pair to the relevant
ground plane.
The analog and digital planes are connected at one location
close to the DAC. To avoid ground loop problems, do not
connect AGND and DGND elsewhere in the system.
Bench Supply with LDOs
Not applicable
Not applicable
Inserted
A
A
A
B
A
A
LK_DV
LK_V
OUT+ ADP7142
B
LK_AV
A
ADP7142
LK_V
OUT–
LK_AV
B
ADP7142
A
J4
Rev. 0 | Page 3 of 17
Bench Supply
Not applicable
Not applicable
Inserted
B
B
B
B
A
A
CC
LK_V
REF
B
A B
ADP7142
A
+2.5V
+5V V /
DD REFIN
DV
V
CC
REFOUT
B
+21V
AD5761R
V
DD
A
–11V
V
SS
SS
B
A
UG-1151
V /
REFIN
V
REFOUT